Skip to content
MathsGenie logo
Open app

Course home

  1. A Level
  3. Maths WJEC
  5. Question bank

Sequences and Series

EasyMedium
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384
Question 20

The first three terms of an arithmetic series are (2x−3)(2x-3)(2x−3), (5x−2)(5x-2)(5x−2) and (10x−7)(10x-7)(10x−7) respectively.

a.

Find the value of the constant xxx.

[2]
b.

Find the sum of the first 25 terms of the series.

[3]

Sequences and Series Questions

  1. A Level
  2. /Maths
  3. /Sequences and Series